So, my parents are buying a 1997 Country coach RV. It was a steal for the price, and they were looking to buy one anyways. So they found this one for real cheap and its actually in really good condition for its age. So were going to be picking it up on Saturday. So I told them it'll be slow as crap with the 300hp 8.3 cummins, and told them they needed to upgrade it. So were looking at around 425-450hp, maybe more, just as long as fuel milage doesnt go down to much. My understanding is this is basically a 12 valve 5.9 cummins, except with 8.3 liters. So I found a guy on ebay selling performance injectors that he claims add 60-80hp. Does a fuel plate from a 12 valve 5.9 work in this 8.3's IP? If so which one should we be looking at buying, or are they even offered? Should we unhook the wastegate, or upgrade/buy a bigger turbo?